<!DOCTYPE html>
<html>
<head>
	<title>canvas弹跳小球</title>
	<meta charset="utf-8">
</head>
<body style="background:#000">
	<canvas id="container" style="display:block;margin: 0 auto;border:solid 1px #12D6F8;" width="1200px" height="700px">您的浏览器不支持canvas属性</canvas>
	<a href="javascript:void(0);" id="button" style="display:block;text-align:center;line-height:50px;">开始</a>
	<script type="text/javascript" src="ball.js"></script>
</body>
</html>